package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.Objects;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();
        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);
        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        if (!DigestUtils.md5DigestAsHex(password.getBytes()).equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (Objects.equals(employee.getStatus(), StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 添加员工
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setStatus(StatusConstant.ENABLE);
        employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setPassword(PasswordConstant.DEFAULT_PASSWORD);
        employeeMapper.insertEmployee(employee);
    }

    /**
     * 获取员工分页数据
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public Result<PageResult> getEmployeeList(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.selectEmployeeList(employeePageQueryDTO);
        PageResult pageResult = new PageResult();
        pageResult.setRecords(page.getResult());
        pageResult.setTotal(page.getTotal());
        return Result.success(pageResult);
    }

    /**
     * 启用或禁用员工
     * @param status 状态
     * @param id 被修改员工id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
        log.info("员工：{}",employee);
        employeeMapper.update(employee);
    }

    /**
     * 根据id获取员工属性
     * @param id 员工id
     * @return 员工
     */
    @Override
    public Result getEmployeeById(Long id) {
        Employee employee = employeeMapper.selectEmployeeById(id);
        employee.setPassword("*****");
        return Result.success(employee);
    }

    /**
     * 员工对象
     * @param employeeDTO 员工信息
     */
    @Override
    public void editEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }
}
